Baxi · Duo-tec 2 Combi GA Boilers
The spanner symbol is illuminated or flashing on the boiler display, indicating a fault that typically cannot be reset by the user and requires professional attention. Specific error codes will usually be displayed alongside this symbol.
Click steps to track your progress.
Note the specific error code displayed alongside the spanner symbol (e.g., E117, E133) for diagnostic purposes.
Do not attempt to repeatedly reset the boiler as the manual states these types of faults are not user-resettable.
Contact your installer or the Baxi service division ('heateam') immediately to arrange for a service engineer visit.